Non-whip catheter

ABSTRACT

The angiographic catheter includes a long generally flexible portion of a first material, an intermediate portion of the first material and a second material that is more flexible than the first material and a tip portion of the second material. The long body portion has a first exit opening having a stream trajectory directed toward the exit stream trajectory from the tip member exit for stream breakup and mixing. A reaction exit is directed in the opposite direction of the first exit opening. 
     The generally long body portion with a curved end portion with a first end curve of generally circular shape about a center that is connected to the end of the long body with a compound curve connected to the end of the first end curve and having a member positioned generally parallel to the long body portion with the distance between parallel members generally less than to the radii of the generally circular shape. 
     The long body member is generally the long generally flexible portion which is composed entirely of the first material. Approximately first ninety degrees of the first end curved is generally the intermediate portion composed of the first and second material. The rest of the first end curve and the compound curve is composed of the second material. The reaction from the stream exiting the tip member exit is to move the parallel portion back into the first end curve without other movement because of reaction from the streams exiting exits.

BACKGROUND OF THE INVENTION

The present invention is to an angiographic catheter having threematerial portions and three shape portions and three exit opening toprovide a non whip angiographic catheter.

In the past various shapes and designs have been proposed and used. Allprevious designs whip backward when high pressure fluid passes throughthe angiographic. Such movement can damage vessel walls. The highpressure fluid exiting the angiographic catheter if not controlled candamage vessel walls especially when the catheter whips back.

BRIEF DESCRIPTION OF THE INVENTION

The new and improved angiographic catheter invention includes a curvedend having a main opening facing back in the longitudinal direction ofthe catheter body position. The catheter includes a long generallyflexible portion of a first generally hard material, an intermediateportion of the first material and a second generally soft material and atip portion of the second material. The long flexible body portion has asecond exit opening having a stream trajectory direction toward the pathof the main stream trajectory from the tip portion for stream breakupand mixing. A reaction exit facing in the opposite direction of thesecond exit opening.

The end of the long, flexible body portion is curved having generallycircular shape about a center. The intermediate portion lies in thegenerally circular shape. A compound curve in the general shape of an Stype shape is connected to the end of the circular shape. The long bodyportion, circular shape and compound curve lie in the same plane. Thetip end is positioned generally parallel to the long body portion withthe distance between parallel members generally less than to the radiiof the generally circular shape.

The generally long flexible body portion is composed entirely of thefirst material that is harder and more rigid. Approximately first ninetydegrees of the circular shaped end curve is generally the intermediateportion composed of the first and second materials. The first materialdecreases over the ninety degree and the second material increases overthe ninety degrees. The rest of the circular shaped end curve and thecompound curve is composed of the second softer material. The reactionfrom the stream exiting the main exit at the end of the tip portionmoves the tip portion back into the circular shaped portion withoutother movement of the long flexible body portion because of the curves,materials and the other stream exits.

It is an object of this invention to provide a nonwhip angiographiccatheter.

It is another object of this invention to provide an angiographiccatheter that has a tip and that moves back in to the curved shapeconnecting the tip end to the main body portion.

It is a further object of this invention to provide a two materialangiographic catheter to provide curved portion to absorb the main exitstrean reaction.

BRIEF DESCRIPTION OF THE DRAWING

In the drawing:

FIG. 1 is a side view of the angiographic catheter.

FIG. 2 is a top view of FIG. 1.

FIG. 3 is a bottom view of FIG. 1.

FIG. 4 is an illustrative with streams exiting the main exit and thesecond exit and the third exit.

FIG. 5 is a partial enlarged sectional view.

DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring now to the drawings and the FIGS. 1 through 5, theangiographic catheter 10 includes a long generally flexible portion 12of a first material 14, an intermediate portion 16 of the first material14 and a second material 18 that is more flexible then the firstmaterial 14 and a tip portion 20 of the second material 18. The catheterhas a main exit 28. The long body portion 12 has a first exit opening 22having a stream trajectory 24, shown in FIG. 5, directed toward the exitstream trajectory 26 from the tip member exit 28. The streams intersectand breakup and mix as shown, at numeral 30. A reaction exit 32 isdirected in the opposite direction of the first exit opening 22.

The generally long body portion 12 with a curved end portion 34 with afirst end curve 36 of generally circular shape about a center 38 that isconnected to the end of the long body with a compound curve 40 connectedto the end of the first end curve 36 and having a member 42 positionedgenerally parallel to the long body portion 12 with the distance betweenparallel members 12 and 42 generally less than to the radii of thegenerally circular shape.

The long body member 12 is generally the long generally flexible portionwhich is composed entirely of the first material 18. Approximately firstninety degrees of the first end curve 36 is generally the intermediateportion composed of the first and second material. The rest of the firstend curve 36 and the compound curve 40 is composed of the secondmaterial 18. The reaction from the stream exiting the tip member exit 28is to move the parallel portion 42 back into the first end curve withoutother movement because of reaction from the streams exiting exits 22 and32.

The material in portion 14 is preferably a polyurethane. The material inportion 18 is preferrably a polyamide 18. The portion 36 includes in oneembodiment a tapering portion of the polyurethane material from A to B.The portion A to B increases in thickness of the polyamide material 18.The catheter is used under high pressure.

The curved portion 36 may have a 0.5 mm radius. The portion solely ofmaterial 18 may be one inch long. The dual material portion from A to Bmay be one half inch long to three quarter of an inch long.

The catheter may be of one material or made of a plurality of material.The catheter may be of the shape disclosed with one material or of theplurality of materials in areas A to B and area 40 and 34 less A to Band area 14 in other shapes to provide the same results.

The instant invention has been shown and described herein in what isconsidered to be the most practical and preferred embodiment. It isrecognized, however, that departures may be made therefrom within thescope of the invention and that obvious modifications will occur to aperson skilled in the art.

What I claim is:
 1. An angiographic catheter comprising:a long generallyflexible portion of a first material, and an end portion beginning atthe end of said long portion; said end portion having a first portion ofsaid first material and a second portion having said first material anda second material and a third portion of said second material, saidsecond material being more flexible than said first material; said endportion having a first end curve portion having a first and second endwith said first end connected to said long portion; and a second endcurve portion with one end connected to said second end of said firstend curve; said second end curve having a tip portion with an exitopening generally parallel to said long portion for passage of a streamof liquid under pressure therethrough; and a second exit in said longportion positioned so that a stream of liquid under pressure exitingthrough the second exit intersects with the stream of liquid from thetip exit opening to disperse the latter.
 2. An angiographic cathetercomprising:a long generally flexible portion, and an end portionbeginning at the end of said long portion; said end portion having afirst end curve portion and having a first and second end with saidfirst end connected to said long portion; and a second end curve portionwith one end connected to said second end of said first end curve; saidsecond end curve having a tip portion with an exit opening generallyparallel to said long portion for passage of a stream of liquid underpressure therethrough; and a second exit in said long portion positionedso that a stream of liquid under pressure exiting through the secondexit intersects with the stream of liquid from the tip exit opening todisperse the latter.